AASHTO M 281:96(2018) Standard Specification for Steell Fence Posts and Assemblies, Hot-Wrought.
4. ORDERING INFORMATION
4.1. Orders for products under this standard should include the folio wing:
4.1.1. Quantity (number of pieces) of line posts. end, or gate assemblies, corner or intermediate brace assemblies (It is customary to order line posts in multiples of five of the required length and the required number of end or corner assemblies.);
4.1.2. Type of section (if a specific section is required) (Section 6.2 and Figure 1);
4.1.3. Length or lengths required (Section 7.2):
4.1.4. Finish—galvanized or painted:
4.1 .5. AASHTO designation and date of issue;
4.1.6. Anchor plates. if required (Section 6.4.3); and
4.1.7. Wire fasteners (state weight of zinc coating if other than Class 1) (Sections 6.6.2 and 6.6.3). Note 1—A typical ordering description is as Ibllows: 500 line posts; painted 8 ft long;M 281- ; omit anchor plates.
5. GENERAL REQUIREMENTS
5.1. Material furnished under this AASHTO specification shall conform to the general requirements of the current edition of ASTM A29/A29M unless otherwise provided herein.
6. MATERIALS AND MANUFACTURE
6.1. Material:
6.1.1. Line post shall be fabricated from Steels A or B and assemblies from Steels A, B, or C as specified in Table 1.
6.1 .2. Except as provided in Section 6.1.3, the finished line post and assemblies shall conform to the tensile properties specified in Table 1 for the applicable steel.
6.1.3. At the manufacturer’s option, a Brinell or Rockwell B hardness test may he substituted for the tensile requirements in Table I. In such cases, the material shall conform to the Brinell or Rockwell B hardness specified in Table 2.
6.4. Anchor Plates:
6.4.1. Each line post shall be manufactured with an anchor plate. unless otherwise specified. The anchor plate shall be made from carbon steel and shall be swaged or riveted to the post in such a manner as to prevent displacement when the posts are driven.
6.4.2. The placement of the anchor plate shall be nominally 14 in. (350 mm). 16 in. (400 mm), or 18 in. (450 mm) from the bottom of the post to the uppermost portion of the anchor plate.
6.4.3. Anchor plates shall be tapered to facilitate driving, shall have a minimum area of 18 in.2 (11 600 mm2), and shall weigh 0.67 lb (0.3 kg) ±5 percent.
6.4.4. When specified, line posts may be furnished without anchor plates.
6.4.5. Anchor plates shall be manufactured from Type A or B materials.AASHTO M 281 pdf download.